 | | Re: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
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I have one of each RCX (1.0, 1.5 , 2.0) and have tested the signals using a palm app called IRMonitor with little or no difference between the three. This is by no means a "labratory test". Haveyou noticed this with more than one brick? For the (...) (23 years ago, 18-Dec-02, to lugnet.robotics)
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| | Re: Working motorized focus for Vision Command
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(...) Well, I'm not an expert - but I imagine it should be possible to produce a measure of how sharp the image is. For example by adding up all the differences between one pixel and it's neighbours. In a sharp image, you'd expect a lot of nice high (...) (23 years ago, 18-Dec-02, to lugnet.robotics)
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| | Re: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
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(...) Actually I've noticed that the 2.0 brick's IR capabilities don't seem to be as strong as the 1.0/1.5 bricks. I don't know why this would be, if something got changed in the hardware? It isn't an issue for most things, but if you want bricks (...) (23 years ago, 18-Dec-02, to lugnet.robotics)
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| | Re: USB IR Tower Linux
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(...) There's a driver project at (URL) also P C Chan did a patch for BrickOS to support it (URL) (I havent tried either of these) Regards ROSCO (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | USB IR Tower Linux
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Anyone got the USB IR tower shipped in 2.0 to connect to a linux box? If not, are there any specs available so that I can write one? Thanks, Brian Palmer (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | RE: 8472
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Take at look at (URL) (If you didn't already) Greetings, Bram Nauta [bram.nauta@home.nl] -----Oorspronkelijk bericht----- Van: Laszlo Meszaros (ETH) [mailto:Laszlo.Mesza...icsson.se] Verzonden: dinsdag 17 december 2002 21:47 Aan: (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | Re: Lego® 9V Technic Motors compared characteristics
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(...) This is very informative indeed and excellently designed; I learned quite a bit from the article. thanks and great work. BTW do you happen to know how the new 8475 motors compare here? (from what I have heard, they are more powerful than (...) (23 years ago, 17-Dec-02, to lugnet.robotics, lugnet.technic)
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| | Re: Last Call For BricksWest 2003 Presenters/Sessions
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Is anyone presenting brickOS at BricksWest? Their last call states that they are heavy on Mindstorms but the Brickwest website, last updated in October?, seems to only indicate several talks on RoboLab. It would be great to have someone present. Or (...) (23 years ago, 17-Dec-02, to lugnet.robotics, lugnet.events.brickswest)
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| | Re: linker segmentation fault
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(...) Workaround attached. Brickos maintainers: Any comments? Maybe put something vaguely like it into CVS? Max. (23 years ago, 17-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Autonomous RCX Racing - formerly Nascar style racing
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These are exellent ideas, I was originally trying to support 20+ teams like a tournament. only a few (eight is plenty)cars would be on the track at one time. Now I realize that would be better handeled by a database. I like the idea of the vision (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | Re: Autonomous RCX Racing - formerly Nascar style racing
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(...) Random thoughts: The way I read it, you can only notify of position down to 9th place. I guess you could treat 9th place as "9th or worse place". Also, you can only send a count of up to 9 laps, limiting either the race length or the error (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | RE: Autonomous RCX Racing - formerly Nascar style racing
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<SNIP> (...) Perhaps 2 bits for race status, 3 bits for car #, and 3 bits for position. That gives 8 cars and 8 positions plus allows the ability to tell a car "finished", "keep racing", or "caution": MSB 7 6 5 4 3 2 1 0 LSB s s c c c p p p Message (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | Re: Working motorized focus for Vision Command
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anyone?? (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | linker segmentation fault
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I'm running Red Hat Linux 8.0 (gcc 3.2 and binutils 2.13). Whe I try to compile the demos that come with brickOS 0.2.6.09, using binutils 2.12.91 for the cross-linker and gcc 3.2.1 as cross-compiler, the linker crashes. Here is the output of the (...) (23 years ago, 17-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Autonomous RCX Racing - formerly Nascar style racing
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(...) Here is a link to Gus Janson's SteerBot ((URL) which I think you will find has great maneuverability as well as a tight turning radius (~6"). I have replicated it several times in the past 2 months for my group's line following event. After (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | Re: Autonomous RCX Racing - formerly Nascar style racing
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(...) What about 5?! (...) What message would the 11th place car get? Right off the bat, I'd say 23 cars is too many. It won't leave any room to move around, so they'll spend all their time bumping each other. I'd guess 4 or 6 would be about right. (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | Re: Lego® 9V Technic Motors compared characteristics
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(...) Someday I'm going to update my links page and you're going to be in it! Best regards, /Tobbe (URL) SPAM when e-mailing) (23 years ago, 17-Dec-02, to lugnet.robotics, lugnet.technic)
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| | Re: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
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(...) The only difference is that the 1.0 brick has an external power connector so you can save batteries while testing by plugging in an external mains adaptor. In all other respects, the three bricks are identical. (...) Yes. My 1.0 brick runs 2.0 (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | Re: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
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To add to Stephane question: Are there any hardware differences between between the 2.0, 1.5, and 1.0 versions of the RCX brick? Has anyone noticed any performance differences? Are all programmable with the included RIS 2.0 software? Roy Nelson (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | Autonomous RCX Racing - formerly Nascar style racing
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After some intense fiddeling around I have created a couple working vehicles or autonimous racers based on the discussions a previous post. The vehicles handle like traditional race cars without the ackerman style steering by having a motor powering (...) (23 years ago, 17-Dec-02, to lugnet.robotics)
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| | Vision Command
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Hello, For anyone interested... I have two spare Vision Command Constructopedias and CD's (English). If anyone is willing to part with the software/documentation from the Steven Spielberg Movie Studio set, please email me. Also, I'd like to expand (...) (23 years ago, 16-Dec-02, to lugnet.robotics)
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| | Re: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
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(...) Dunno - but the overriding thing that should determine which one you'd want is that the 1.5 RIS comes with a SERIAL PORT (RS-232) interface to the infra-red tower - the 2.0 set has a more modern USB interface. The USB version is better - but (...) (23 years ago, 16-Dec-02, to lugnet.robotics)
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| | RE: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
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The major differences between RIS 1.5 and 2.0 are the RIS software and the IR Tower. The software upgrade from RIS 1.5 to 2.0 is $19.99 (#3805) from LEGO's website. A USB IR Tower can be purchased from pldstore.com (W979783) for $29.00. There was no (...) (23 years ago, 16-Dec-02, to lugnet.robotics)
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| | Re: BrickOS Threading...
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(...) To tell you the truth, I'm not exactly sure how the BrickOS PWM works, but I do know the standard RCX PWM simply switches the motors between ON and FLOAT, which will not slow the motor down, when it switches from a high power, to a lower (...) (23 years ago, 16-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
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(...) Almost identical... parts differences: RIS 2.0 has an USB infrared tower, RIS 1.5 a serial one. RIS 2.0 also has an "optic fiber" used to program Micro Scout. (...) No, but RIS 2.0 has instructions for 6 more constructions on CD. Philo (...) (23 years ago, 16-Dec-02, to lugnet.robotics)
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| | Tempted in buying my first Mindstorms invention kit - 1.5 vs 2.0 ?
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Currently debating in my head whether of these versions is the best to buy. I've checked the inventory with Peeron, all RIS kits appear more or less identical in their supply of parts. Does 1.5 come with ANYTHING that isn't included in 2.0 ? I would (...) (23 years ago, 16-Dec-02, to lugnet.robotics)
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| | Re: sys_time (long post)
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Only a suggestion, In any processor architecture (with or without disabling or recursive interrupts) when I need to read timers with more than 1 single instruction I do the following: Read the timer (both low and high value) until I get 2 times the (...) (23 years ago, 16-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Working motorized focus for Vision Command
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This may be a stupid question, but could the vision command be made to "autofocus" given special code? Timothy (...) (23 years ago, 15-Dec-02, to lugnet.robotics)
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| | Re: Lego® 9V Technic Motors compared characteristics
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Nice page, Philippe! Thanks for all the work. Mark "Philippe Hurbain" <philohome@free.fr> wrote in message news:H765Fr.ME9@lugnet.com... (...) (23 years ago, 15-Dec-02, to lugnet.robotics, lugnet.technic)
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| | Re: Lego® 9V Technic Motors compared characteristics
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Just corrected a cut and paste error in speed/torque table of 43362, and (...) (23 years ago, 15-Dec-02, to lugnet.robotics, lugnet.technic)
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| | Re: Lego® 9V Technic Motors compared characteristics
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UR great Philo!!! (23 years ago, 15-Dec-02, to lugnet.robotics, lugnet.technic)
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| | Re: LegoX Technic Motor (43362) internals
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(...) It's 6.11125 meters. (...) Yes - it's hard to tell because the difference in speeds will depend on the load on the motors - loading them either more or less would alter their characteristics relative to each other. (...) Yes - I think so. (...) (23 years ago, 15-Dec-02, to lugnet.robotics)
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| | Lego® 9V Technic Motors compared characteristics
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Hi everybody, I have completed a 9V technic motors comparison page. See it at (URL) ! Philo www.philohome.com (23 years ago, 15-Dec-02, to lugnet.announce, lugnet.robotics, lugnet.technic) !!
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| | Re: Demo of Lego Studio?
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(...) Yes, it's possible. At least it WAS possible 6 months ago in the U.S. I had similar idea and called Lego consumer service. They sent informatin back, telling that you can order Lego studios sofrware, it costs approx. $30.00 Try to contact your (...) (23 years ago, 15-Dec-02, to lugnet.robotics.vc)
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| | Re: Lego® Technic Motor (43362) internals
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(...) Ah! (...) My friend wont bother much since the boxes are for education at hiw workplace. I conducted a quick test with one 71427-002 and one 43362 (with new internals), put them back to back with a 8462 wheel on each axel and a 9V small (...) (23 years ago, 15-Dec-02, to lugnet.robotics, lugnet.technic)
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| | Re: Lego® Technic Motor (43362) internals
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Hi Tobbe, My guess is that your friend actually got one 43362 and one 71427, the latter beeing enclosed in a 43362 case. If you look at 43362 enclosure photo ((URL) you see that there are 4 plastic pins in corners that are used to secure 71427 core (...) (23 years ago, 15-Dec-02, to lugnet.robotics, lugnet.technic)
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| | RE: Shuffle bot
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From watching the son of whyachi and looking at the specs page i think: 1. the concept that you are looking at is different from the actual locomotion of SOW 2. it isn't going ot be easy to reproduce this in Lego 3. I found something else to work on (...) (23 years ago, 14-Dec-02, to lugnet.robotics)
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| | Re: Lego® Technic Motor (43362) internals
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(...) and it contains two 43362 motors. These are not the same: (URL) one without the "backholes" spins like the older geared motor, for aprox six seconds given a twist on the shaft, the other one for but one second... The mystery deepens... (...) (23 years ago, 14-Dec-02, to lugnet.robotics, lugnet.technic)
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| | Pre-Announcing Off-Road RC Racing Competition at BricksWest 2003
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I am going to be holding an Off-Road RC racing competition at BricksWest 2003. It will still take me a few days to get the rules together, but I thought that with the $99 8475's available at Amazon, (see (URL) I'd give people the heads up, so that (...) (23 years ago, 14-Dec-02, to lugnet.events.brickswest, lugnet.technic, lugnet.robotics)
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| | Re: Shufflebot Concept
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The problem with that is you'd have to put the mechanisms together by putting axles over the first setup, which begins looking ugly. This is how I achieved the first walking part: 1. Geared down motor going to two output axles. 2. Put two pulleys on (...) (23 years ago, 13-Dec-02, to lugnet.robotics)
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